Pipette tip rack assembly



FIG. 1 is a top perspective view of a pipette tip rack assembly withclosed lid;

FIG. 2 is a front view thereof;

FIG. 3 is a back view thereof;

FIG. 4 is a side view thereof;

FIG. 5 is a side view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom view thereof; and,

FIG. 8 is a bottom perspective view thereof.

The broken lines in the drawings depict portions of the pipette tip rackassembly that form no part of the claimed design.

CLAIM The ornamental design for a pipette tip rack assembly, as shownand described.